Sheriffs on horseback and police break up a group of demonstrators outside Republican U.S. presidential candidate Donald Trump’s campaign rally in Costa Mesa, California.
Photographers in the press pen as Prime Minster David Cameron welcomes US President Barack Obama to Downing Street
Republican U.S. presidential candidate Donald Trump’s hand is seen as he reacts during a campaign event in Harrisburg, Pennsylvania
Democratic presidential candidate Hillary Clinton arrives at a campaign stop in Philadelphia
A Secret Service Agent stands guard as Democratic presidential candidate Hillary Clinton speaks at the Corsi senior center, in New York
Demonstrators demanding an increase in the minimum wage to $15-dollars-per-hour prepare to march in the streets on Thursday in Chicago, Illinois. The demonstrators marched to and protested in front of several locations during a day-long effort to draw attention to low-wage jobs
Attendees cheer for Senator Ted Cruz, a Republican from Texas and 2016 presidential candidate, not pictured, during a campaign event in Milwaukee, Wisconsin, U.S.
A man takes a photograph of the stage before a campaign event featuring Republican presidential candidate Donald Trump at St. Norbert College in De Pere, Wisconsin, USA
Dan LaMoore wheels a clock away from the test area as it is prepared to be shipped to a Tennessee school at the Electric Time Company in Medfield, Massachusetts.
Justin Sullivan/Getty Images
Democratic presidential candidate Hillary Clinton speaks to an capacity audience during a campaign event in Vernon Hills, Illinois.
Phelan M. Ebenhack/AP
Tim Ferris shades himself from the sun while waiting in line to attend a campaign rally with Democratic presidential candidate, Sen. Bernie Sanders, in Kissimmee, Florida, USA
Republican presidential candidate, Senator Marco Rubio, poses for photographs during a campaign rally in Hialeah, Florida
Pablo Martinez Monsivais/AP
President Barack Obama meets with members of his economic team in the Roosevelt Room of the White House in Washington. Obama spoke about U.S. employers adding 242,000 workers in February, driving another solid month for the resilient American job market
Marcio Jose Sanchez/AP
Oklahoma City Thunder’s Kevin Durant drives to the basket between Golden State Warriors’ Harrison Barnes, left, and Shaun Livingston during the second half of an NBA basketball game in Oakland, Calif.
Joel Kowsky/NASA via Getty Images
The plane carrying Expedition 46 Commander Scott Kelly of NASA is seen as it taxis after landing at Ellington Field after his return to Earth
Voters cast ballots at a polling station for Massachusetts’ primary election, as Super Tuesday starts in North Andover, Mass USA
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Democrat presidential candidate Hillary Clinton gestures during a commercial break at a CNN town hall televised event at the University of South Carolina School of Law, in Columbia, US
Protesters carry placards outside an Apple store in Boston to protest the FBI obtaining a court order that requires Apple to make it easier to unlock an encrypted iPhone used by a gunman in December’s shooting in San Bernardino
Julio Cortez / AP Photo
A full moon rises over the Statue of Liberty, seen from the Port Liberte neighborhood of Jersey City, N.J